Clamshell-dredger bucket



F b. 2 1926. 1,571,838- A. HUTSON cLAM SHELL DREDGER BUCKET Filed Jupe 11. 1924 2 Sheets-Sheet 1 Ckl Z'dld mvsu ron WITNESS: ATTORNEY Feb. 1926 4 1,571 3 A. HUTSON CLAM SHELL' DREDGER BUCKET Filed June 11, 1924 2 Sheets-Sheet 2 v WITNESSES ATTORNEY Patented Feb. 2, 1926.

ARCHIBALD I-IUTSON, OF ERTEg-IENNSYLVANIA.

CLAMSI-IELL-DEEZDGER BUCKET.

Application filed June 11, 1924.

To all whom it may concern:

Be it known that I, Anemia/Ann l-lU-rsoN, a citizen of the United States, residing at Erie, in the county of Erie. and State of Pennsylvania, have invented new and useful Improvements in Glamshell-Dredger Buck: ets, of which the following is a specification. 8

This invention relates to clam shell dredger buckets and has for its chief characteristic the arovision of such bucket, wherein each section of the bucket is provided with a double power arm, in contra-distinction to the single power arm now generally used, thus aitording the bucket a double capacity intaking up and supporting its load.

The nature and advantages of the invention will be better understood when the following'detailed descriptionis read in connection with the accompanying drawings, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals of reference indi cate similar parts in the several views, and wherein:

Figure 1 is a side elevation of the bucket showing the latter closed.

Figure 2 is a similar view showing the bucket opened.

Figure 3 is a view taken at a right angle to Figure 1 showing one of the bucket halves in section.

Figure 4 is a detail view of the double power arm construction for a. half of the bucket.

Figure 5 is a view taken at a right angle to Figure 4.,

Figure 6 is a top plan view of the tackle block,

Figure 7 is a sectional view through said block.

Referring to the drawings in detail I have shown a bucket of ordinary well known construction, wherein the respective halves of the bucket are indicated at 10, and the outer end of each half is suspended from the tackle block by means of a pair of oscillating rods 11. This block preferably consists of spaced inner plates 12 and a pair of spaced outer plates 13, the plates 13 being spaced from the adjacent inner plates 12 by spacing elements 14 supported by the bolts or rivets 15 which secure all of these plates together as clearly shown in Figure 7. Ar-

Serial No. 719,442.

ranged transversely of this block is a bracket arm 16 equipped with an eye member 17 to which the adjacent end of the suspension cable 18 is connected. Carried by one of the inner plates 12 of said block, and immediately adjacent said bracket 16 is a pair of spaced pulleys 19 between which the power cable 20 passes, which cable is associated with the respective parts of the bucket in a manner to be hereinafter described. Ar-

ranged between the spaced inner plates 12 V is a narrow sheave 21, and also a relatively wide sheave 22 about which the power cable is trained. The pivots 23 for these sheaves connect all of the plates of the tackle block, and upon inspection of Figure 6 it will be noted that the upper ends of the rods 11 are formed with eyes 2 1 which receive the elements 23, these eyes 24L being positioned in the space between the adjacent inner and outer plates 12 and 13 respectively.

Each part 1.0 of the bucketis equipped with what I term double power arms clearly illustrated in Figures 1 and 5. The arms for each part 10 are indicated at 26 and connected by a transverse member 27. The arms 26 of each pair rise a slight distance above the transverse member 27 to form bearings 28 for a pivot 29, common to the arms associated with both halves of the bucket as the bearings 28 of both sets of arms are adapted to be arranged in alignment to receive the pivot 28 as shown in Figures 1 and 3. The arms 26 of each pair are adapted to be riveted or otherwise suitably secured to the opposed sides of the particular half of the bucket with which said arnrs are associated, this arrangement being also clearly shown in Figure 3. Hising from the transverse member 27 is what I term a lever extension 29 which is provided with an opening 30 to receive the pivot 29 above mentioned, the lever extension on each member 27 being bifurcated as at 31 to accommodate a pulley 32 which is arranged between the separated portions of said lever extension formed by said bifurcation. It will be noted that each transverse member 27 is slightly ofiset as at 33, so that when the power arms 26 are connected to the respective halves of the bucket, the lever extensions 29 will normally assume positions in close proximity and in parallel relation as shown in Figures 1 and 3.

The power cable 20,, which of course is adapted to be connected with a motor opstated drum, not shown, passes between the spaced pulleys 19 of the tackle block, and is passed beneath the pulley 32 of the lever extension 31 carried by the right half. of the bucket as shown in Figure 2. The cable is then extended in the direction of the tackle block, and passed several times around the relatively wide sheave S22, and thence extended across to the relatively narrow sheave ll, from which point it leaves the tackle block, being trained beneath the pulley 32 journaled on the lever extension 31 associated with the left hall oi? the bucket. the terminal of said cable being socured to the tackle block atthe point 34;. It is of course to be understood that the runs or leads of the cable can vary without departingfrom the spirit ot the invention, inasmuch as it can be used in several ways without eii'ecting the operation of the bucket. However, it will be manifest that each bucket: half is equipped with a double or duplex power arm which ailords the bucket in its entirety a double capacity in picking up and supporting its load, and this is true irrespective of the particular use to which the bucket is put. Further more the construction and arrangement of parts forming the tackle block is such that it requires but a minimum amount of space or head room.

\Vhile it is believed that from the fore going description, the nature and advantages of the invention will be readily apparent, I desire to have it understood that I do not limit myself to what is herein shown and described, and that such changes may be resorted to when desired as fall within the scope of Whatis claimed.

\Vhat I claim, is:

In combination, a tackle block includ ing spaced side plates and an intermediate plate, both connecting said plates, pulleys jourimlled thereon and arranged on 0p posite sides of the intermediate plates. oscillating rods depending from said tackle block, bucket sections supported by said rods, spaced power arms rising from each lJUCh'Ut'SOCLlOD, a transverse member connecting each pair 01" said arms, with the upper extremities of the latter projecting above said transverse member and having alined opening, a lever extension arising from said transverse member between said arms and having an opening in aline with the openings of said arms said upper extremities of the respective pairs of arms being arranged side by side, a pivot passed thru all of said openings, whereby the bucket sections are supported for movement towards and away from each other, ulleys journalled on the free ends of saicl lever extension, and a power cable trainedover the pulleys of said tackle block and includ ing cross rods passed under the pulleys of said lever as for the purpose specified;

In testimony whereof I aflix my sigature.

ARCHIBALD HUTSON. 

